package com.cicadamob.contact.api.Utils.NetWork;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class NetWorkUtil {
	/**
	 * 是否有网络
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isConnected(Context context) {
		if(context == null)return false;
		ConnectivityManager cm = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = cm.getActiveNetworkInfo();

		return networkInfo != null && networkInfo.isConnected();
	}

	/**
	 * 是否是wfi
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isWifi(Context context) {
		ConnectivityManager cm = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = cm.getActiveNetworkInfo();
		if (networkInfo != null && networkInfo.isConnected()) {
			if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
				return true;
			}
		}
		return false;
	}

	/**
	 * 获取当前网络类型
	 * 
	 * @param context
	 * @return
	 */
	public static int getNetType(Context context) {
		ConnectivityManager cm = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = cm.getActiveNetworkInfo();
		if (networkInfo != null && networkInfo.isConnected()) {
			return networkInfo.getType();
		}
		return -1;
	}

	/**
	 * 是否是gprs
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isGprs(Context context) {
		ConnectivityManager cm = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = cm.getActiveNetworkInfo();
		if (networkInfo != null && networkInfo.isConnected()) {
			if (networkInfo.getType() != ConnectivityManager.TYPE_WIFI) {
				return true;
			}
		}
		return false;
	}
}
